Regex to detect negative numbers but not hyphenated numbers

I want to detect positive and negative integers but not hyphenated numbers. For example:

From 2020-2022, the frequency of COVID-19 increased when the temperature fell between 10 and -10 degrees. (2)

I want to match 10, -10, and 2, but not -2022 or -19.*

• \b-?\d+\b is catching ALL the numerics because - is a non-word character
• \B-\d+\b will catch ONLY the negatives.
• There can be numbers in parens, brackets, etc. so I cannot simply use spaces as a boundary.
• (\B-|(?<!\w-)\b)\d+\b should work, but my engine cannot use negative lookbehinds. sigh

*I would rather not match the 2020 too but "integers not years" is beyond the scope of regular expressions.

You can first match what you don't want; then use a pipe; and then match what you want; and finally use the latter.

For example, you can use the following without SKIP FAIL:

import re

s = """
From 2020-2022, the frequency of COVID-19 increased when the temperature fell between 10 and -10 degrees. (2) From 2020 - 2022, 
the frequency of COVID-19 increased when the temperature fell between 10 and -10 degrees. (2)

"""

print(tuple(filter(None, re.findall(r'(?im)(?:\d+\s*|[a-z0-9]+)-\s*\d+|([-+]?\d+)', s))))

('10', '-10', '2', '10', '-10', '2')

Further details are elaborated on in this link.